Sphenolithus editus Perch-Nielsen in Perch-Nielsen et al., 1978
Perch-Nielsen, K., Sadek, A., Barakat, M. G., Teleb, F., 1978. Late Cretaceous and Early Tertiary Calcareous nannofossil and Planktonic foraminifera zones from Egypt. Actes du VI Colloque Africain de Micropaléontologie Tunis 1974. Annales des Mines et de la Géologie Tunis 28, 337-403.
Sphenolithus editus
Perch-Nielsen in Perch-Nielsen et al., 1978
Early Eocene
Gebel Gurnah, Egypt